Questions tagged [error]
The error tag has no usage guidance.
194
questions
0
votes
0answers
17 views
Error message shown as [object Object] when use require, how to get actual error message string in Remix IDE Console?
I have used require function as:
require(owner == msg.sender, "Sender must be owner");
But in the remix console I got,
transact to Contract.setAdmin errored: [object Object]
What should I ...
2
votes
2answers
26 views
Ethereum Wallet - Hangs at startup + 403 ws error
I have installed the Ethereum Wallet, Ethereum-Wallet-win64-0-11-1 (zip file), as described in the book. When I start up Ethereum Wallet (testnet Ropsten, syncmode “light”) the wallet seems to load ...
0
votes
1answer
13 views
not implement an abstract parent's methods completely or not invoke an inherited contract's constructor correctly
Having This error while deploying.
pragma solidity 0.4.25;
// ----------------------------------------------------------------------------
// Sample token contract
//
// Symbol : {{Token ...
0
votes
0answers
57 views
Contract call: data out of bounds
I'm working on a nextjs/react project in which i want to fetch the health factor of an address on AAVE. This can be done by calling getUserAcountData(address) on the lending pool contract. I can ...
1
vote
0answers
76 views
What to do if Metamask doesn't show a deposit because it's an “internal transaction”?
This is a follow-up on the question "Do all transactions show in Metamask wallet?" from Sky Hayward, in which Sky asked about transactions that show up as successful on etherscan, yet the ...
0
votes
1answer
201 views
Do all transactions show in metamask wallet?
Bare with me I'm new here :) I've been selling art on Rarible but I can't tell if the Eth is going into my account. Because I'm minting nft's I can't keep track of my Eth total. My wallet activity ...
0
votes
1answer
17 views
Can not Open Ethereum Wallet on Window 10
I did trying install soft Ethereum wallet on windows 10, But I can't open the program. It looks like the picture below. Help me pls, Thank everyone.
0
votes
0answers
11 views
Raise & return error with message if no key found in mapping
I am writing a test that should fail because it looks for a key that doesn't exist on a mapping. How can I raise the error with and error message in solidity? this is the test:
it('Should NOT update ...
0
votes
1answer
20 views
Error in code Expected pragma, import directive or contract/interface/library definitio
I am getting the below error when i compile the below code. Using remix compiler version 0.5.11
****browser/TodoList.sol:7:2: ParserError: Expected pragma, import directive or contract/interface/...
0
votes
0answers
25 views
Error: The send transactions “from” field must be defined!
I get this error, even though I do specify the transaction sender.Here is my code:
for(let a=1; a<TEST_ORACLES_COUNT; a++) {
await config.flightSuretyApp.registerOracle({from: accounts[a], ...
0
votes
0answers
26 views
Type error, unit256 is not implicitly convertible to expected type struct
Using sol compiler 0.5.1
I am trying to fetch data from old smart contract's function called people, the smart contract is already deployed on the blockchain
mapping(address => Person ) public ...
0
votes
0answers
21 views
Trying to deploy a simple contract using node and getting the error: Unhandled Promise Rejection / Contract code couldn't be stored
I am doing an online course and trying to deploy using node. Can anyone help ID what I might be doing wrong. Thank you for any help! The error is below, followed by the js code.
iii@iii:~/Digital ...
0
votes
1answer
151 views
While testing wrap & unwrap of ETH to WETH on Kovan ,however the wrap function is fine but unwrap func fails,is anything wrong in my approach?
trx fails at
& debug at tenderly
pragma solidity 0.5.12;
contract WETH9_
{
mapping (address => uint) public balanceOf;
mapping (address => mapping (address => ...
0
votes
0answers
22 views
How to deploy huge contracts using web3?
I have a huge contract (which exceeds the default contract code size set in Quorum). I have increased the Code size and Transaction size in the Genesis file to 128Mb. The contract works well when ...
2
votes
0answers
26 views
Are there well-solved patterns and practices for handling errors in Solidity?
In the spirit of Are there well-solved and simple storage patterns for Solidity?...
Are there known, battle-tested practices for how to deal with errors in large Solidity codebases?
It's common in ...
0
votes
1answer
37 views
Getting this error `ValueError: {'code': -32000, 'message': 'insufficient funds for gas * price + value'}` on raw transaction send
I know for sure I have enough eth on account. Some prelims:
I am signing a raw transaction with web3.py, like so:
transaction = {
'to': '0xSENDHEREFINALLYPLEASE',
'value': 1000,
'gas': ...
0
votes
1answer
47 views
Error when sending multiple transactions
I'm having a weird issue with the code below in that sometimes it works and sometimes it doesn't. It seems more apparent when TRANSACTIONS is set to a larger number. I have had it fail AND pass with ...
2
votes
1answer
1k views
Uniswap V2 smart contract integration reverts attempt at swapping ETH for tokens
I'm trying to integrate Uniswap V2 into my contract but my attempts at making a trade (ETH to Token) always gets reverted.
Here is my solidity code:
pragma solidity ^0.6.0;
// Included the ...
0
votes
0answers
32 views
deployment error
everyone!
Doing Dapp on Etheryum.
When the contract was deployed, the Error: The data field must be HEX encoded data began to fly out.
I do it on a site under Web3 \ JS. Thought the old js resource. ...
0
votes
0answers
102 views
Why error 'Fail with error 'Storage: Unpermissioned operator <0xc3d5d60630bc63eb1a07228cc5028cada1cc4c7b>' arises?
I wants to deposit & withdrawal DAI
(https://kovan.etherscan.io/address/0xc4375b7de8af5a38a93548eb8453a498222c4ff2)
to SOLO Margin(dydx) smart Contract at Kovan testnet (https://kovan.etherscan....
0
votes
1answer
19 views
When i am doing migration, the netwrok name is ganache instead of development and multiple errors are there
D:\>truffle migrate --reset
Compiling your contracts...
===========================
> Compiling .\contracts\Migrations.sol
> Artifacts written to D:\build\contracts
> Compiled ...
1
vote
1answer
78 views
Error: Invalid bytes6 value
I'm trying to create a TicketPurchaser application. Here is the whole code for the smart contract, although I think the problem I'm asking about is a type error, most of the code is not important.
...
1
vote
1answer
31 views
Public / Internal modifier spawns error: This type is only supported in the new experimental ABI encoder [duplicate]
I have this code snippet:
pragma solidity >=0.5.0 <0.7.0;
import "@aztec/protocol/contracts/libs/NoteUtils.sol";
library EscrowUtils {
using NoteUtils for bytes;
struct Note {
...
1
vote
1answer
49 views
“Consider using `transfer` in place of 'call.value()`” is a false error message by ethlint
I am getting following message when I use solium or ethlint, which is actually not correct and confusing developers. I have opened a issue related to that:
Solium returns error for using call.value().
...
1
vote
0answers
63 views
Unexpected fault address
I picked up an Ethereum Blockchain at AWS ECS almost 3 months ago, it was working perfectly until I got this bug yesterday from the mining node:
unexpected fault address 0x7fb93c71d000
[signal SIGBUS:...
0
votes
2answers
36 views
Etherscan says there is not enough ether, why?
Etherscan says there is not enough ether, why? Arguments, which i enter => requestLoan(3,31,3) and after change account, provideGuarantee(0,3)
I have created dApp and how it looks in my code you can ...
0
votes
1answer
3k views
Getting error -> unexpected token. You may need an appropriate loader to handle this file type
root@kali:~/Documents/oraclize-test# npm run dev
truffle-oraclize-api@0.0.2 dev /root/Documents/oraclize-test
webpack-dev-server
ERROR in ./app/javascripts/app.js
Module parse failed: /root/...
1
vote
1answer
388 views
truffle unbox pet-shop gives DownloadingError: read ECONNRESET at TLSWrap.onStreamRead (internal/stream_base_commons.js:201:27)
Ubuntu 18.04.
Truffle v5.1.2 (core: 5.1.2)
Solidity v0.5.12 (solc-js)
Node v13.2.0
Web3.js v1.2.2
When I execute truffle unbox pet-shop on terminal, I get error
✔ Preparing to download
⠼ ...
2
votes
1answer
44 views
Solidity. Find whether a key exists in a mapping. Then get its value
I have a simple mapping:
mapping(address => string) professorsExam;
How can I check if msg.sender is a key in this mapping, and if it is, get its value? If it isn't I should return something.
...
1
vote
1answer
113 views
Issue with selfdestruct() getting an error
main contract function which calls my secondary contract
function gameOver(uint _matchId)public payable onlyOwner returns(bool) {
Match my_match = Match(matchTracker[_matchId]);
bool success ...
0
votes
1answer
104 views
invalid implicit conversion from contract to address requested contract
I am using this function to create a new contract instance of Match contract which takes 4 parameters.
However i am getting this error message "invalid implicit conversion from contract to address ...
0
votes
2answers
73 views
Assertion error running truffle test
I can't seem to understand where this error comes from. Maybe someone can help
My token solidity file :
pragma solidity >=0.4.2 <0.6.0;
contract LairToken {
//Name
string public ...
0
votes
0answers
96 views
Error: Returned values aren't valid, did it run Out of Gas based on YT Tutorial
I red the other Threads about this case, but couldn't fixed the problem.
I got this tutorial for Scmart contracts:
https://www.youtube.com/watch?v=coQ5dg8wM2o&feature=youtu.be
However the ...
1
vote
0answers
26 views
0
votes
0answers
82 views
How can MetaMask alert about transaction errors before they are caused?
The MetaMask extension has this feature to warn about transaction errors before a transaction is being made:
ALERT: Transaction Error. Exception thrown in contract code.
How is this done? A dry ...
0
votes
1answer
159 views
rpc error with payload and exception thrown in contract code
This is the problem I get when trying to run my contract!
And then when I go ahead and run it, this pops up
This is my js code:
import React, { Component } from 'react';
import Web3 from 'web3';
...
0
votes
3answers
628 views
Remix Deploy Error encoding arguments
I'm building a simple fund raising smart contract and having problems deploying this through Remix. I'm wanting to set the "goal" and "minimum contribution" values (in wei) during the contract ...
-3
votes
2answers
137 views
Trying to create an instance of an abstract contract
pragma solidity ^0.5.0;
import 'https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/math/SafeMath.sol';
contract SubToken{
mapping(address => uint) balances;
...
2
votes
1answer
227 views
How does one retrieve revert/require error messages from RPC
In both of these questions, the user is asking if it's possible to get the error string from a revert or require. The answers say, basically, "Yes" and point to Truffle or other methods.
VM Exception ...
0
votes
1answer
186 views
create ERC-20 token from a contract function
I would like to do a function create contract with ERC-20 interface.
But I have a few problems.
If anyone help me I’ll be appreciated.
Here’s the code :
pragma solidity ^0.5.0;
import 'https://...
0
votes
1answer
110 views
create contract from function / contract
**Hey guys !
I just try to make a contract for create a contract.
It supposed to be ERC-20 interface so my first contract for this.
But I don’t know how can I do _mint and createContract functions
...
0
votes
1answer
49 views
Expected identifier but got reserved keyword 'reference' Product public reference; ^-------^ [closed]
hello guys I am a beginner.
I would like to make a function for create a contract.
I found a example on the internet but gives me an error so I dont know what should I do.
Anyone can help me ?
...
1
vote
2answers
420 views
Error: gas required exceeds allowance or always failing transaction in Remix using Ropsten network
I am facing this error
, My Contract is quite simple
pragma solidity ^0.5.0;
contract sendEther {
address payable sender;
function showReceiver() public view returns (address payable) {
...
0
votes
2answers
21 views
it'll give me a parser error
pragma solidity ^0.5.0;
contract fisrtCoin {
address deployer;
mapping(address=>uint) balances;
public function fisrtcoin() {
deployer = msg.sender;
}
public ...
0
votes
1answer
264 views
'types/values length mismatch',
Hey guys I had a problem with my return function
here's my smart contract :
pragma solidity >=0.4.0 <0.7.0;
contract NewHello{
address owner;
address newOwner;
constructor()public{
...
1
vote
1answer
1k views
Function declared as view, but this expression (potentially) modifies the state requires payable
I'm trying to change the an address data variable to a one, which is selected via a function.
Keep getting the below error.
Function declared as view, but this expression (potentially) modifies the ...
0
votes
3answers
1k views
ParserError: Expected ',' but got identifier
pragma solidity >=0.4.0 <0.7.0;
contract NewHello{
struct kullanicilar{
string name;
string surname;
uint age;
}
event infoChanged(
string name,
...
1
vote
0answers
475 views
Etherscan says “we were unable to locate a matching bytecode (err_code_2)”
Please help me with this error...
I dont know what is it?
0
votes
1answer
828 views
Transaction Error. Exception thrown in contract code. (MetaMask)
When I use Ganache it runs with no problem and MetaMask too. When I run my contract in my private Ethereum network (Geth). When I use a function from my contract the MetaMask gives me this error (...
0
votes
0answers
43 views
Get the address of a contract without using Remix-ide
I'm studying Ethereum, I need to get the contract address for interact with web3, I can not use Remix-IDE for this since that I installed Kali as an operating system. How I get the contract address ...
